While San Francisco is hosting the America”s Cup, Vallejo hosted its own exciting race Sunday: The Obtainium Cup.

The second annual kinetic contraption rally, organized by local artists, took place on Mare Island from 3 to 9 p.m.

In comparison to its debut last year, the cup attracted 21 more entries Sunday, for a total of 26.

“This is fabulous,” organizer Kathy O”Hare said before the start of the race at the Coal Shed Art Studio on the island. “There”s a carnival atmosphere… The weather has been absolutely wonderful, and everybody is having a great time.”

The entries came from all over the Bay Area, as well as an entry from Colorado, O”Hare said. She and her husband, Shannon, own Obtainium Works, a Vallejo-based art car studio.

The first cup began at the Shoreline Heritage Preserve Visitors Center, however, the location has now turned into a pit stop instead of a starting point.

“The Coal Shed is just a more practical choice,” Kathy O”Hare said. “There”s more facilities, more parking and electricity.”

In the future, she said she hopes to turn the race into more of a treasure hunt, and involve island residents and businesses.

Sunday racers pedaled their hand-built kinetic cars through a 4.5-mile course around the island, where challenges and hazards awaited them. Participants had to dodge flying stuffed toys shot rom contraptions, make their way through zombies at the preserve through creative ways, and answer a riddle at the Mad Hatter Tea Party.

There were a few returning racers Sunday, including the reigning champion, Mill Valley”s Baron Von Jabba and his creations Miss Tickle, the Creature Quad, and Hawk. Both are four-wheel cycles attached with moveable white dragons.

“As long as we have fun, I think we will win,” Von Jabba said.

Other familiar faces were the Oakland duo, Liam McNamara and Kimric Smythe, who brought Silverfish. Their two-seater amphibious canoe bike did not make it very far last year.

“It broke down after about 100 feet,” Smythe said.

The Silverfish”s major issues have since been fixed, its creators said.

“We modeled this after the bug,” said McNamara, who like Smythe was wearing a silver hat with antennae and green-rimmed, bug-like sunglasses. “It”s our mascot for the race.”

Fortunately for them, the Silverfish passed its 100-foot record, and managed to cross the finish line Sunday.

The racers weren”t the only ones having fun.

Hundreds of spectators walked or biked along with the racers to cheer for them and watch the rally.

Vallejoans Melanie McCallum and Jeff Palmer happened upon the race by accident.

“We decided to ride our bikes because it was a nice day,” McCallum said. “I think we ended up riding in the race.”

The couple, who wasn”t aware of the race, said both were happy to see such an event.

“I can”t believe I didn”t know about this,” Palmer said.

As artists themselves, both said they are considering participation in the next Obtainium Cup.

“It reminds me of the stuff that goes on in Oakland,” said McCallum, who moved to Vallejo from San Francisco a few years ago. “We need more things like this in the city. Unfortunately, there”s a lack of pride in Vallejo. I think if the community comes together and puts on more events like this, it”ll help.”

At the end of the race, an Oakland and Hayward robot duo and its vehicle Aleopile took the speediest award, while a Benician 13-year-old teen came in second with his Xterminator.

Jacob Carroll said he modified his bike with the help of his grandfather.

“It”s fun,” Carroll said. He spray painted his bicycle red, and added a crutch and wooden blocks wrapped in a bent metal sign.

“Next year it”ll be something better,” he said. “Something with three wheels… I”ll have more time to prepare.”

The five judges also awarded the racers in other categories, including artistry, cacophony, best and worst engineering, cheater, and many more.

Everyone was invited to food, refreshments and music following the race.